Triple-cam-drive gasoline engine



June 17, 1930. F, H, KIN 1,765,237

TRIPLE CAM DRIVE GASOLINE ENGINE Filed Feb. 17. 1928 2 Sheets-Sheet 1 aINVENTOR ATTORNEY WITNESS:

June 17, 1930. KING 1,765,237

TRIPLE CAM DRIVE GASOLINE ENGINE Filed Feb. 17,, 1928 2 Sheets-Sheet 2INVENTOR Patented June 17, 1930 UNITED STATES FRED H. KING, CANTON, OHIOTRIPLE-CAM-DRIVE GASOLINE ENGINE Application filed February 17, 1928.Serial No. 255,099.

I This invention has particular relation to steam gas and petrol enginesand which embodies among other characteristics a cam drive mechanismadapted to increase the 5 power thereof.

Another object of the invention comprehends a multiple cam memberoperating from the drive or crank shaft and adapted for direct drivingconnection with the engine pis- 10 tons whereby the employment ofconnecting rods and bearings therefor is obviated.

A further object of the invention contemplates means adapted toestablish connection between pairs of pistons whereby both will operatesimultaneously to occupy their respective alternate positions.

More specifically stated, the pistons are provided with roller membersadapted for engagement with the faces of the cam to relieve friction andto effect aligning of the pistons within their respective cylinderbores.

With the above and other objects in view, the invention further consistsof the following novel features and details of construction, to behereinafter more fully described, illustrated in the accompanyingdrawings and pointed out in the appended claim.

In the drawings Figure 1 is a sectional view taken through atwo-cylinder engine illustrating the connection of the cam membertherewith.

Figure 2 is a side elevation of the drive shaft and cam member mountedthereon.

Figure 3 is a sectional view taken on line 33 of Figure 1.

Figure 1 is a longitudinal sectional View taken through a pair of thepistons and illustrating the connection of the connecting means androller members mounted thereon.

Figure 5 is an elevation of a modified form of the piston.

Figure 6 is an elevation of the cam member illustrating the manner bymeans of which the same may be effectively employed to operate fourcylinders.

Referring to the drawings in detail, wherein like characters ofreference denote corresponding parts, the reference character 10indicates a housing or crank case, or which may be termed a cam casepreferably cylindrical in contour, the purpose of which will bepresently apparent. Cylinders 11, carried upon the housing, are sodisposed to register the bores thereof with the interior of the housingin diametrically opposed relation. A drive shaft 12, mounted within thehousing, is adapted to support a cam member 13 thereon and which may bekeyed, splined or otherwise rigidly connected therewith.

As best illustrated in Figures 1 and 6 of the drawings, the cam member13 is provided with triple faces best adapted for motors having two andfour cylinders respectively. Obviously, the number of faces upon the cammember may be changed commensurate with the number of cylinders in theparticular engine or motor. A straight in line motor may be provided bymounting more cams on a single shaft.

Pistons 14 are carried within the cylinders 11. Plate. members 15,extended within the pistons 14 are adapted to lie flush against theadjacent sides of fins 16 within said pistons and which are held againstdisplacement therein'through the instrumentality of pins 17. g

As best illustrated in Figure 4 of the draw-' ings, the plate members 15are provided in pairs and spaced apart to provide a race-way to permitrotation of'roller members 18 carried upon the pins 17. The platemembers 15, are in addition, provided with elongated slotted portions 19which extend the length of the plates between the adjacent ends of eachpair of pistons. Bosses or hub portions 20, outstanding from the sidesof the cam member 13 adjacent the spline or key connection of the driveshaft therewith, are adapted .to engage the sides of the elongatedslotted portions 19 in the connecting plates 15.

' As best illustrated in Figure 1 of the drawings, the cam member 15 hasfaces 21 rounded to prevent friction when engaging the roller members 18and arcuate shaped or curved portions 22 between the faces wherein oneof the roller members may be disposed when the adjacent piston exercisesa power stroke whereas the opposed piston is shifted to 0ccupy theinitial stroke position. As illustrated in Figure 1 of the drawings, thepistons depend, as indicated at 23, upon diametrically opposite sidesthereof adjacent the connection of the pins 17 therewith to providestronger mountings for'the latter and to permit ingress of the cam faces21.0f the member 13 when engaging and releasing each moved or slottedportions 25'within diametrically opposed sides thereof and which areadapted to accommodate and permit passage of the cam faces 21 of themember 15 precedent and subsequent to engagement with the roller members18. Obviously, the latter piston construction is the cheaper, as anyform of piston could be cut away to provide a slot of sufiicientdimensions to receive the cam faces.

In the two cylinder triple cam drive engine illustrated in Figure 1 ofmy drawings, it will be readily noted that six power strokes will bedelivered in one and one-third revolutions of the drive shaft 12. A twocylinder crank shaft engine would deliver only one power stroke in onerevolution. My particular type of triple cam drive engine will obviatemany of the parts generally employed in the old style crank case engine,principally the friction bearings, crank shaft, connecting rods and flywheel and yet derive three times as much power per revolution incontradistinction to the crank shaft engine.

It is readily seen that other cam members may be constructed having morefaces to operate a corresponding number of pistons commensurate with thestroke of the pistons and power to be derived or developed.

By reason of the fact that the present invention obviates the employmentof many of the parts necessary in the make-up of the crank shaft engine,it is to be noted that less friction would occur and consequently theburden is lightened, whereby the usual sluggishness apparent in theoperation of the (rank shaft engines will not exist.

The manifolds, valve mechanisms and ignition systems for the triple camdrive engines may be connected with the cylinders 11, after "the mannerof the rotary engine; although the cylinders in this instance arestationary. The pistons being provided with compression rings.

The invention is susceptible of various changes in its form, proportionsand minor details of construction, and the right is herein reserved tomake such changes as properly fall within the scope of the appendedclaim.

Having described the invention, what is claimed is A cam drive enginecomprising a housing provided with a multiplicity of cylinders adaptedfor communication therewith and peripherythereon-bossescarried-upon'oppo site sides of the cam adjacent the shaft beingextended within the slotted portions of the plate members, and rollermembers carried within each of the pistons and journaled between theplates for engagement with the rounded ends and curved raceways of thecam through the guideways formed by the portions removed in the pistons.

In testimony whereof I aifix my signature.

'- FRED H. KING.

